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Method and system for treating black and odorous water sludge

A black and odorous water body and treatment method technology, which is applied in the treatment method and system field of black and odorous water body sludge, can solve the problems of sludge pollution of water body, environmental secondary pollution, organic matter corruption, etc., and achieve low raw material cost, faster The effect of low dosage and short production cycle

Active Publication Date: 2017-12-22
CHONGQING YUANDA WATER SERVICE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Suspended particles adsorb ferrous sulfide, manganese sulfide, etc., causing the water body to turn black; organic matter decays and decomposes, and produces odorous substances such as ammonia, hydrogen sulfide, mercaptan, sulfide, organic amines, and organic acids, which cause the water body to become stinky, and the pollution of the water body The mud is seriously polluted, and the black and smelly water not only pollutes the environment, but also has a very bad impact on people's lives
Existing sludge such as urban sludge or industrial sludge is mostly treated by landfill or high-temperature incineration, which is not only costly, but also easily causes secondary pollution to the environment. In addition, sludge in black and odorous water bodies also has certain organic matter and calorific value, which is an available resource, and direct landfill or high-temperature incineration is a waste of resources

Method used

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  • Method and system for treating black and odorous water sludge
  • Method and system for treating black and odorous water sludge

Examples

Experimental program
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Effect test

preparation example Construction

[0042] Concrete preparation method comprises the following steps:

[0043] (1) Configure mixed solution: take 1% sodium hydroxide aqueous solution and 2% ethanol aqueous solution to configure mixed solution according to the volume ratio of 7:93;

[0044] (2) After the loofah is cut into small sections, tear it into individual loofah shreds and cut the loofah shreds into 1-1.5cm, place the gained loofah shreds in the mixed solution prepared in step (1), and mix them at 100 Boil at ℃ for 2 hours, then filter, collect the filter residue and wash it repeatedly with distilled water until the last cleaning solution is neutral, then dry the cleaned filter residue at 100℃ for 5 hours;

[0045] (3) Stir and mix the filter residue after drying in step (2) with cement, starch, and seaweed powder for 1.5 to 2.5 hours to obtain a high-efficiency concentrator; wherein, the molecular weight of the starch is not less than 300,000, and the cement is Portland cement or ordinary Portland cement...

Embodiment 1

[0061] The processing method of the black and odorous water body sludge provided by the present embodiment may further comprise the steps:

[0062] a. After stirring the black and odorous water slurry evenly, carry out solid-liquid separation treatment, collect the obtained sludge and add a high-efficiency concentrator to concentrate, and the amount of the high-efficiency concentrator is 2% of the mass of the sludge to be concentrated;

[0063] b. Add hydrochloric acid to adjust the pH of the concentrated sludge obtained in step a, adjust to pH≤3, and then add Fe to it 2 (SO 4 ) 3 Stir well, add Fe 2 (SO 4 ) 3 The ratio of the mass of the sludge to the volume of the sludge is: 4.3g: 1L; then it is introduced into the electrolyte (distilled water is used as the electrolyte) for electrolysis, and the electrolysis time is 10 minutes;

[0064] c. Carry out solid-liquid separation of the mixture obtained after the electrolytic treatment in step b, collect and separate the obta...

Embodiment 2

[0083] The processing method of the black and odorous water body sludge provided by the present embodiment may further comprise the steps:

[0084] a. After stirring the black and odorous water body mud evenly, carry out solid-liquid separation treatment, collect the obtained sludge and add high-efficiency concentrator to concentrate, and the amount of high-efficiency concentrator is 1% of the mass of the sludge to be concentrated;

[0085] b. Add sulfuric acid to adjust the pH of the concentrated sludge obtained in step a, adjust to pH≤3, and then add FeCl to it 3 Stir well, add FeCl 3 The ratio of the mass of the sludge to the volume of the sludge is: 1.7g: 1L; then it is introduced into the electrolyte (distilled water is used as the electrolyte) for electrolysis, and the electrolysis time is 25 minutes;

[0086] c. Carry out solid-liquid separation of the mixture obtained after the electrolytic treatment in step b, collect and separate the obtained sludge and add lime pow...

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Abstract

The invention provides a method for treating black and odorous water sludge. The method for treating the black and odorous water sludge comprises the following steps: stirring, solid-liquid separation, concentrating, acidifying, electrolyzing, solidifying, drying and fermenting to obtain an organic fertilizer so as to form a complete sludge treatment chain. Meanwhile, waste water and waste gas which are generated in the process are treated, secondary pollution to the environment can be avoided in any links in a treatment process, solid wastes, waste gas and waste liquid can be treated in a targeted manner, the treatment effect can be good, the sludge can be recycled effectively, and waste materials can be changed into things of value. Meanwhile, the invention further provides a sludge treatment system, in the treatment system, all units can be matched with one another quite well, arrangement of the units is quite reasonable, a process which is suitable for the various units is selected, and therefore, the treatment effect can be quite good.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a treatment method and system for black and odorous water sludge. Background technique [0002] With the rapid development of the country's economy, my country's industrialization process is also accelerating, but because my country's industrial structure belongs to the extensive production mode, the economic development has paid a high environmental price. Especially with the continuous improvement of the degree of urbanization, the treatment volume, treatment rate and treatment degree of urban sewage have been continuously improved, and the output of sludge due to urban sewage treatment has also increased greatly. When the content of organic pollutants in the water body is too high, under the action of aerobic microorganisms, the decomposition of organic matter will consume a large amount of oxygen in the water, turning the water body into an anoxic or anaerobic state. Unde...

Claims

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Application Information

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IPC IPC(8): C02F11/00C02F11/14C02F11/12C02F11/02C02F11/04C05G3/04C02F101/20C02F101/30C05G3/80
CPCC02F11/00C02F11/006C02F11/008C02F11/02C02F11/04C02F11/12C02F11/122C02F11/14C02F2101/20C02F2101/30C02F2209/02C02F2209/06C02F2301/08C02F2303/02C02F2303/04C05D9/00C05G3/80C05F5/002C05F7/00C05F11/00C05F11/08Y02W10/20
Inventor 张占梅胡蓉李锐
Owner CHONGQING YUANDA WATER SERVICE
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